cd6898e6ee
as they would have been translated from partitions of type "GPT". This fixes sysinstall, now that geom_part has taken over from geom_gpt. Approved by: re (kensmith)
285 lines
7.0 KiB
C
285 lines
7.0 KiB
C
/*
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* Copyright (c) 2003 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/disklabel.h>
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#include <sys/diskmbr.h>
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#include <sys/gpt.h>
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#include <sys/uuid.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <uuid.h>
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#include "libdisk.h"
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static uuid_t _efi = GPT_ENT_TYPE_EFI;
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static uuid_t _mbr = GPT_ENT_TYPE_MBR;
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static uuid_t _fbsd = GPT_ENT_TYPE_FREEBSD;
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static uuid_t _swap = GPT_ENT_TYPE_FREEBSD_SWAP;
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static uuid_t _ufs = GPT_ENT_TYPE_FREEBSD_UFS;
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static struct disk *
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parse_disk(char *conftxt, const char *name)
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{
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char devname[64];
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struct disk *disk;
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struct dos_partition *part;
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struct gpt_hdr *gpt;
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char *buffer, *p, *q;
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int fd, i;
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disk = (struct disk *)calloc(sizeof *disk, 1);
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if (disk == NULL)
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return (NULL);
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disk->name = strdup(name);
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p = strsep(&conftxt, " "); /* media size */
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disk->media_size = strtoimax(p, &q, 0);
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if (*q)
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goto fail;
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p = strsep(&conftxt, " "); /* sector size */
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disk->sector_size = strtoul(p, &q, 0);
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if (*q)
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goto fail;
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if (disk->sector_size == 0)
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disk->sector_size = 512;
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if (disk->media_size % disk->sector_size)
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goto fail;
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/*
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* We need to read the disk to get GPT specific information.
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*/
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snprintf(devname, sizeof(devname), "%s%s", _PATH_DEV, name);
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fd = open(devname, O_RDONLY);
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if (fd == -1)
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goto fail;
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buffer = malloc(2 * disk->sector_size);
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if (buffer == NULL) {
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close (fd);
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goto fail;
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}
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if (read(fd, buffer, 2 * disk->sector_size) == -1) {
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free(buffer);
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close(fd);
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goto fail;
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}
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close(fd);
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gpt = (struct gpt_hdr *)(buffer + disk->sector_size);
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if (memcmp(gpt->hdr_sig, GPT_HDR_SIG, sizeof(gpt->hdr_sig))) {
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/*
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* No GPT present. Check if the MBR is empty (if present)
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* or is a PMBR before declaring this disk as empty. If
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* the MBR isn't empty, bail out. Let's not risk nuking a
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* disk.
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*/
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if (*(u_short *)(buffer + DOSMAGICOFFSET) == DOSMAGIC) {
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for (i = 0; i < 4; i++) {
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part = (struct dos_partition *)
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(buffer + DOSPARTOFF + i * DOSPARTSIZE);
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if (part->dp_typ != 0 &&
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part->dp_typ != DOSPTYP_PMBR)
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break;
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}
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if (i < 4) {
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free(buffer);
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goto fail;
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}
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}
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disk->gpt_size = 128;
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disk->lba_start = (disk->gpt_size * sizeof(struct gpt_ent)) /
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disk->sector_size + 2;
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disk->lba_end = (disk->media_size / disk->sector_size) -
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disk->lba_start;
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} else {
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disk->lba_start = gpt->hdr_lba_start;
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disk->lba_end = gpt->hdr_lba_end;
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disk->gpt_size = gpt->hdr_entries;
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}
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free(buffer);
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Add_Chunk(disk, disk->lba_start, disk->lba_end - disk->lba_start + 1,
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name, whole, 0, 0, "-");
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return (disk);
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fail:
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free(disk->name);
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free(disk);
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return (NULL);
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}
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struct disk *
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Int_Open_Disk(const char *name, char *conftxt)
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{
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struct chunk chunk;
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uuid_t uuid;
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struct disk *disk;
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char *p, *q, *r, *s, *sd, *type;
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u_long i;
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uint32_t status;
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p = conftxt;
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while (p != NULL && *p != 0) {
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q = strsep(&p, " ");
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if (strcmp(q, "0") == 0) {
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q = strsep(&p, " ");
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if (strcmp(q, "DISK") == 0) {
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q = strsep(&p, " ");
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if (strcmp(q, name) == 0)
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break;
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}
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}
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p = strchr(p, '\n');
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if (p != NULL && *p == '\n')
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p++;
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conftxt = p;
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}
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if (p == NULL || *p == 0)
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return (NULL);
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conftxt = strchr(p, '\n');
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if (conftxt != NULL)
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*conftxt++ = '\0';
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disk = parse_disk(p, name);
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if (disk == NULL)
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return (NULL);
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while (conftxt != NULL && *conftxt != 0) {
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p = conftxt;
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conftxt = strchr(p, '\n');
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if (conftxt != NULL)
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*conftxt++ = '\0';
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sd = strsep(&p, " "); /* depth */
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if (strcmp(sd, "0") == 0)
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break;
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type = strsep(&p, " "); /* type */
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chunk.name = strsep(&p, " "); /* name */
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q = strsep(&p, " "); /* length */
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i = strtoimax(q, &r, 0);
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if (*r)
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abort();
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chunk.end = i / disk->sector_size;
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q = strsep(&p, " "); /* sector size */
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for (;;) {
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q = strsep(&p, " ");
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if (q == NULL)
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break;
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r = strsep(&p, " ");
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i = strtoimax(r, &s, 0);
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if (*s) {
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status = uuid_s_ok;
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if (!strcmp(r, "efi"))
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uuid = _efi;
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else if (!strcmp(r, "mbr"))
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uuid = _mbr;
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else if (!strcmp(r, "freebsd"))
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uuid = _fbsd;
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else if (!strcmp(r, "freebsd-swap"))
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uuid = _swap;
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else if (!strcmp(r, "freebsd-ufs"))
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uuid = _ufs;
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else
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uuid_from_string(r, &uuid, &status);
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} else
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status = uuid_s_invalid_string_uuid;
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if (!strcmp(q, "o"))
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chunk.offset = i / disk->sector_size;
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else if (!strcmp(q, "i"))
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chunk.flags = CHUNK_ITOF(i) | CHUNK_HAS_INDEX;
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else if (!strcmp(q, "ty"))
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chunk.subtype = i;
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}
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if (strncmp(type, "MBR", 3) == 0) {
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switch (chunk.subtype) {
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case 0xa5:
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chunk.type = freebsd;
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break;
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case 0x01:
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case 0x04:
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case 0x06:
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case 0x0b:
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case 0x0c:
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case 0x0e:
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chunk.type = fat;
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break;
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case 0xef: /* EFI */
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chunk.type = efi;
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break;
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default:
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chunk.type = mbr;
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break;
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}
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} else if (strcmp(type, "BSD") == 0) {
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chunk.type = part;
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} else if (strcmp(type, "GPT") == 0 ||
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strcmp(type, "PART") == 0) {
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chunk.subtype = 0;
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if (status != uuid_s_ok)
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abort();
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if (uuid_is_nil(&uuid, NULL))
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chunk.type = unused;
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else if (uuid_equal(&uuid, &_efi, NULL))
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chunk.type = efi;
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else if (uuid_equal(&uuid, &_mbr, NULL))
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chunk.type = mbr;
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else if (uuid_equal(&uuid, &_fbsd, NULL)) {
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chunk.type = freebsd;
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chunk.subtype = 0xa5;
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} else if (uuid_equal(&uuid, &_swap, NULL)) {
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chunk.type = part;
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chunk.subtype = FS_SWAP;
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} else if (uuid_equal(&uuid, &_ufs, NULL)) {
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chunk.type = part;
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chunk.subtype = FS_BSDFFS;
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} else
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chunk.type = part;
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} else
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abort();
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Add_Chunk(disk, chunk.offset, chunk.end, chunk.name,
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chunk.type, chunk.subtype, chunk.flags, 0);
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}
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return (disk);
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}
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